427 aset ac ..

[Artful dodger]

So I wana start with thanks gotten some incredible help thru this forum I need more . As a few of the fellas on here know I bought  Mack having no idea that they where so diff than the rest of the field.. thought I was getting an e7 per the seller nope 427 asset ac.. hooking it up to computer that’s available it pushing 426 hp it has all new epus new compressor new pulleys new steering box new radiator new fuel lines newer suspension on the truck still Hendrickson air ride tho . I driven owned and repaired trucks most my life so I’m not green there except  for this motor .. it was deleted exhaust to egr plugged coolant still runnin thru egr  cooler I’ve driven a lot 400 hp trucks and this one doesn’t seem to have the power those do..  is it a Mack thing ? rearends and tranny maybe  think it came with rearends and tranny from factory  ??

[Artful dodger]

Left and right maybe there was not something I changed all the time so I could be mistaken and looking like a fool about now

[Joey Mack]

that is why i was asking other questions.......   there is...  if you put them on the wrong side it will knoock the rollers out of the shoes if it goes too far..  so yes, to left and right. if you notice the positiion of the brake chambers is different. front drive (front of the axel), rear drive (rear of the axel)... 

[Joey Mack]

I forgot to add, that the left and right part I just posted was for the s-cams, and the part I left out is for how the slack adjusters ratchet, (self adjusters)  they will not work correctly on the opposite sides. sorry, I was typing so fast I passed my brain in turn 2 heading for the straight away..  

[Artful dodger]

Look a little closer at that here in a second I did notice that the grease Certs are almost impossible to get to on one side because they’re facing or in between the damn psych adjuster and the brakes instead of on the outside where you can get to him. They’re on the same side on both. How do I say this Are on the same side of the slack adjusters on both the left side of the truck and the right side of the truck. They’re both facing the same way. Shouldn’t right in the left. Have grease shirts opposite each other and I’m doing talk to text so you might have to translate this . 

[Joey Mack]

i can tell... the words suck...  pictures will help, forgive me..

[Joey Mack]

front drive zerks face down, rears face up, on Mack rears..  

[Artful dodger]

Say it slow maybe it’ll come in maybe these are the wrong slack adjusters reason I think so maybe the wrong reason but they are on the same side of the slack adjuster on both sides of the truck. Does that make sense? So basically you can get to one pretty easy the other one is in between adjuster and the brake ones on the outside ones on the inside like they’re both on the same side of the slack adjuster that makes sense 

[Artful dodger]

Maybe that’s why I can’t keep these damn brakes adjusted. 

[Joey Mack]

posibbly..  like i said, none of us are there.. wish I could wave the magic wand for you..

[fjh]

2 hours ago, Artful dodger said:

Yeah, so they’re telling me there’s a right in the left slack adjuster on these either. I’m not remembering correctly or there was a right in the left on the W9. I just have forgotten but I don’t think so. What’s the difference right in the left slack adjuster maybe I’m just forgetful and an idiot. I don’t know.

Picture would help

[fjh]

On 9/18/2024 at 4:46 PM, fjh said:

Picture would help

Dodger Did you solve this ?

 

[Artful dodger]

Yes fjh solved trolley brake caused problem. Along with no s cam bushings at all not worn none. So I have a guy that came to me with a 2003 e7 that is hard to start fp at 72 when u finally get it to start 6 new epus new pump if u hand pump it starts faster but still tough any thoughts plse.

[fjh]

have him check his oil level the fuel pump may be on its way out!

[Artful dodger]

Brand new fuel pump 6 new epus. Said the hand pump doesn’t build much pressure either just helps it along . This dude is probably one of the best I’ve ever seen with cat motors I mean salty  so I know he’s probably gone thru the basics he just doesn’t see many Mack’s  oil level will tell him that for sure anything else they said they will crank and crank and it just won’t start but once it does no miss nothin idles smooth 

[Joey Mack]

have you looked at the 2 timing sensors..  a lot of money was thrown at this engine...  EUP's wont cause a no start unless they 'grenade'...  then its a cam job at the least..

[Artful dodger]

What u mean grenade ? The sobs blow up ? 

[Joey Mack]

take out he cam when they break,,  but that is rare.. just wondering why you were told to replace all of them..   

[fjh]

So you’re bro needs to check the cam and crank sensors the engine will take longer to start if one is not operating it will crank a lot longer to get its bearings before letting the engine have fuel!

[Artful dodger]

Oh I have no idea why he replaced them I think he thought it was a fuel issue and doesn’t realize that those things are tough as hell but I told him and he already knows I’m sure that 72lbs of fuel pressure is sufficient that’s what he said he was getting I told him to stop throwing parts at it until I talked to you guys he just doesn’t know much about Mack engines has no way to hook them up and check codes or faults so he’s guessing and knows better than that. 

[Artful dodger]

So I fixed the bleeding treadle valve problem just came in from putting 2 new u joints on it wheel seal on pusher axle yesterday brakes are done on three of 4 on drives . And a guy I know backs into me breaks grill headlight assembly and punches big hole in fiberglass hood . Wasn’t a pretty truck to begin with now I look like I went salvage yard and did what I could tossed her together with duct tape and went to work lol one step forward 2 steps back 😑

[Artful dodger]

Once again you guys are correct crank sensor wires are melted together it’s not working at all  good job guys and thank you again 

[Joey Mack]

The wires for the flywheel sensor take a lot of abuse.every that flies off the steer tire hits them..

[Artful dodger]

I’ll tell him to look there as well if u don’t mind me asking what do or did you and fjh do to be as knowledgeable as u are with specifically Mack and what made you choose these trucks over any other if I’m askin too much I understand 

[Joey Mack]

I started working in the shop at a Mack Dealership, in 2000, and took in all the knowledge i could.  I had a natural attraction to that type of work.. i switched careers, 2+ years ago. I still build Mack engines at home in my shop..  but at a much slower pace..  I also have dozens of Mack svc. Manuals, and read almost all of them..  

[fjh]

20 minutes ago, Joey Mack said:

I started working in the shop at a Mack Dealership, in 2000, and took in all the knowledge i could.  I had a natural attraction to that type of work.. i switched careers, 2+ years ago. I still build Mack engines at home in my shop..  but at a much slower pace..  I also have dozens of Mack svc. Manuals, and read almost all of them..  

My self I have worked for all of the Mack dealers here for the last 40 years ! I stuck with them because it was my comfort zone I liked the simplicity  of the product ! Like anything once you get used to working on it its hard to avoid being drawn in! I swore when drive by wire came along I would quit! However You tend to evolve and continued on! So in a nut shell when ever I got a lay off I was always called back and was one of the first hires when the companys  folded and started back up again ! it happened here 3 times!